SAE AMS 4343D-2004 Aluminum Alloy Extrusions 7 7Zn - 2 4Mg - 1 6Cu - 0 16Cr (7149-T73511) Solution Heat Treated Stress Relieved by Stretching and Overaged (UNS A97149)《通过拉伸和过老化的固溶热.pdf

1、_ SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising there

2、from, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be revised, reaffirmed, stabilized, or cancelled. SAE invites your written comments and suggestions. Copyright 2012 SAE International All rights reserved. No part of this p

3、ublication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-497

4、0 (outside USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org SAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/AMS4343D AEROSPACE MATERIAL SPECIFICATION AMS4343 REV. D Issued 1980-01 Revised 2

5、004-12 Reaffirmed 2012-02 Superseding AMS4343C Aluminum Alloy, Extrusions 7.7Zn - 2.4Mg - 1.6Cu - 0.16Cr (7149-T73511) Solution Heat Treated, Stress Relieved by Stretching, and Overaged (Composition similar to UNS A97149) RATIONALE AMS4343D has been reaffirmed to comply with the SAE five-year review

6、 policy. 1. SCOPE: 1.1 Form: This specification covers an aluminum alloy in the form of extruded bars, rods, wire, shapes, and tubing. 1.2 Application: These extrusions have been used typically for structural parts requiring a combination of high strength, moderate fatigue strength, good stress-corr

7、osion resistance, and good fracture toughness, but usage is not limited to such applications 2. APPLICABLE DOCUMENTS: The issue of the following documents in effect on the date of the purchase order forms a part of this specification to the extent specified herein. The supplier may work to a subsequ

8、ent revision of a document unless a specific document issue is specified. When the referenced document has been cancelled and no superseding document has been specified, the last published issue of that document shall apply. 2.1 SAE Publications: Available from SAE, 400 Commonwealth Drive, Warrendal

9、e, PA 15096-0001 or www.sae.org. AMS 2355 Quality Assurance Sampling and Testing, Aluminum Alloys and Magnesium Alloys, Wrought Products, Except Forging Stock, and Rolled, Forged or Flash Welded Rings AMS 2772 Heat Treatment of Aluminum Alloy Raw Materials AS1990 Aluminum Alloy Tempers SAE AMS4343D

10、Page 2 of 6 2.2 ASTM Publications: Available from ASTM, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959 or www.astm.org. ASTM B 594 Ultrasonic Inspection of Aluminum-Alloy Wrought Products for Aerospace Applications ASTM B 660 Packaging/Packing of Aluminum and Magnesium Produc

11、ts ASTM B 666/B 666M Identification Marking of Aluminum and Magnesium Products ASTM E 399 Plane-Strain Fracture Toughness of Metallic Materials 2.3 ANSI Publications: Available from ANSI, 25 West 43rd Street, New York, NY 10036 or www.ansi.org. ANSI H35.2 Dimensional Tolerances for Aluminum Mill Pro

12、ducts ANSI H35.2M Dimensional Tolerances for Aluminum Mill Products (Metric) 3. TECHNICAL REQUIREMENTS: 3.1 Composition: Shall conform to the percentages by weight shown in Table 1, determined in accordance with AMS 2355. TABLE 1 - Composition Element min max Silicon Iron Copper Manganese Magnesium

13、Chromium Zinc Titanium Other Elements, each Other Elements, total Aluminum - - 1.2 - 2.0 0.10 7.2 - - remainder 0.15 0.20 1.9 0.20 2.9 0.22 8.2 0.10 0.05 0.15 3.2 Condition: Solution heat treated, stress-relieved by stretching to produce a nominal permanent set of 1.5% but not less than 1% nor more

14、than 3%, and overaged to the -T73511 temper (See AS1990). Solution and overaging heat treatments shall be in accordance with AMS 2772. SAE AMS4343D Page 3 of 6 3.2.1 Extrusions may receive minor straightening, after stretching, of an amount necessary to meet the tolerance requirements of 3.5. 3.2.2

15、Extrusions shall be supplied with an as-extruded surface finish; light polishing to remove minor surface imperfections is permissible provided such imperfections can be removed within the dimensional tolerances. 3.3 Properties: Extrusions shall conform to the following requirements, determined on th

16、e mill produced size in accordance with AMS 2355. 3.3.1 Tensile Properties: Shall be as shown in Table 2. TABLE 2A - Minimum Tensile Properties, Inch/Pound Units Nominal Diameter or Least Thickness (bars, rods, wire, profiles) or Nominal Wall Thickness (tubing) Inches Specimen Orientation Tensile St

17、rength ksi Yield Strength at 0.2% Offset ksi Elongation in 2 inches or 4D % Up to 2.999, incl 2.500 to 2.999, incl Over 2.999 to 5.000, incl Longitudinal Long-Trans. Short-Trans. Longitudinal Long-Trans. Short-Trans. 74.0 70.0 70.0 72.0 68.0 68.0 64.0 60.0 60.0 62.0 58.0 58.0 7 5 5 7 5 5 TABLE 2B -

18、Minimum Tensile Properties, SI Units Nominal Diameter or Least Thickness (bars, rods, wire, profiles) or Nominal Wall Thickness (tubing) Millimeters Specimen Orientation Tensile Strength MPa Yield Strength at 0.2% Offset MPa Elongation in 50.8 mm or 4D % Up to 76.17, incl Over 63.50 to 76.17, incl O

19、ver 76.17 to 127.00, incl Longitudinal Long-Trans. Short-Trans. Longitudinal Long-Trans. Short-Trans. 510 483 483 496 469 469 441 414 414 427 400 400 7 5 5 7 5 5 SAE AMS4343D Page 4 of 6 3.3.2 Electrical Conductivity: Shall be not lower than 40.0% IACS (International Annealed Copper Standard) (23.2

20、MS/m). 3.3.2.1 If the conductivity is below 40.0% IACS (23.2 MS/m), the extrusions are not acceptable. Extrusions found to be unacceptable may be given additional overaging heat treatment; if, upon completion of such treatment, they develop mechanical properties and a conductivity conforming to 3.3.

21、1 and 3.3.2, they shall be acceptable. 3.3.3 Stress-Corrosion Resistance: Specimens, cut from extrusions 0.750 inch (19.05 mm) and over in nominal diameter or section thickness, shall show no evidence of stress-corrosion cracking when stressed in the short-transverse (perpendicular to grain flow) di

22、rection to 65% of the specified minimum longitudinal (parallel to grain flow) yield strength. 3.3.4 Fracture Toughness: When specified, the minimum KIcshall be 26 ksi (28.6 MPa ) in the longitudinal (LT) direction and 19 ksi (21 MPa ) in the transverse (TL and ST) directions, determined in accordanc

23、e with ASTM E 399. A compact tension specimen 1.000 inch 0.025 (25.40 mm 0.64) is recommended. Testing shall be in air at room temperature. 3.3.4.1 If a test is invalid due to any single ASTM validity criterion, the test shall be interpreted as having met the requirement if the calculated KQis equal

24、 to or higher than the minimum KIcrequired. If a test fails two ASTM validity requirements, one additional test shall be conducted before submittal to purchaser for disposition. 3.4 Quality: Extrusions, as received by purchaser, shall be uniform in quality and condition, sound, and free from foreign

25、 materials and from imperfections detrimental to usage of the extrusions. 3.4.1 When specified, extrusions shall be subjected to ultrasonic inspection in accordance with ASTM B 594. Standards for acceptance shall be specified by the cognizant engineering organization. 3.5 Tolerances: Shall conform t

26、o all applicable requirements of ANSI H35.2 or ANSI H35.2M. 4. QUALITY ASSURANCE PROVISIONS: 4.1 Responsibility for Inspection: The vendor of extrusions shall supply all samples for vendors tests and shall be responsible for the performance of all required tests. Purchaser reserves the right to samp

27、le and to perform any confirmatory testing deemed necessary to ensure that the extrusions conform to specified requirements. SAE AMS4343D Page 5 of 6 4.2 Classification of Tests: 4.2.1 Acceptance Tests: Composition (3.1), tensile properties (3.3.1), conductivity (3.3.2), tolerances (3.5) and when sp

28、ecified, fracture toughness (3.3.4) and ultrasonic inspection (3.4.1), are acceptance tests and, except for composition, shall be performed on each lot. 4.2.2 Periodic Tests: Stress-corrosion resistance (3.3.3) is a periodic test and shall be performed at a frequency selected by the vendor unless fr

29、equency of testing is specified by purchaser. 4.3 Sampling and Testing: Shall be in accordance with AMS 2355. 4.3.1 When specified, one fracture toughness specimen shall be tested for each orientation specified in 3.3.4. 4.4 Reports: The vendor of extrusions shall furnish with each shipment a report

30、 stating that the extrusions conform to the composition and tolerances and showing the numerical results of tests on each inspection lot to determine conformance to the other acceptance technical requirements. This report shall include the purchase order number, lot number, AMS 4343D, size or sectio

31、n identification number, and quantity. The report shall also identify the producer, the product form, and the size of the mill product. 4.5 Resampling and Retesting: Shall be in accordance with AMS 2355. 5. PREPARATION FOR DELIVERY: 5.1 Identification: Shall be in accordance with ASTM B 666/B 666M.

32、5.2 Packaging: Extrusions shall be prepared for shipment in accordance with ASTM B 660 and in compliance with applicable rules and regulations pertaining to the handling, packaging, and transportation of the extrusions to ensure carrier acceptance and safe delivery 6. ACKNOWLEDGMENT: A vendor shall

33、mention this specification number and its revision letter in all quotations and when acknowledging purchase orders. SAE AMS4343D Page 6 of 6 7. REJECTIONS: Extrusions not conforming to this specification, or to modifications authorized by purchaser, will be subject to rejection. 8. NOTES: 8.1 A chan

34、ge bar (|) located in the left margin is for the convenience of the user in locating areas where technical revisions, not editorial changes, have been made to the previous issue of a specification. An (R) symbol to the left of the document title indicates a complete revision of the specification, in

35、cluding technical revision. Change bars and (R) are not used in original publications, nor in specifications that contain editorial changes only. 8.2 Terms used in AMS are clarified in ARP1917. 8.3 Dimensions and properties in inch/pound units are primary; dimensions and properties in SI units are s

36、hown as the approximate equivalents of the primary units and are presented only for information. 8.4 Purchase documents should specify not less than the following: AMS 4343D Form and size or section identification number of extrusions desired Quantity of extrusions desired Fracture toughness, when specified (3.3.4) Ultrasonic inspection standards when specified (See 3.4.1). 8.5 Key Words: Bars, rods, wire, shapes, and tubing. PREPARED UNDER THE JURISDICTION OF AMS COMMITTEE “D“